The L'Hopital's Rule is a mathematical theorem that helps us find the limit of a function that takes on the indeterminate form 0/0 or β/β. It states that if the limit of the ratio of two functions f(x)/g(x) is of the form 0/0 or β/β as x approaches a certain value, then the limit of this ratio is equal to the limit of the ratio of the derivatives of the two functions, i.e., lim (f(x)/g(x)) = lim (f'(x)/g'(x)).
In other words, to use L'Hopital's Rule to solve a limit, you can take the derivative of the numerator and the derivative of the denominator separately, and then evaluate the limit of the new ratio of derivatives. If the new ratio still takes on the indeterminate form, you can repeat the process until you obtain a determinate form, or conclude that the limit does not exist.
It is important to note that L'Hopital's Rule can only be used when the original limit is in the indeterminate form 0/0 or β/β, and the functions f(x) and g(x) are differentiable.
Mar 09, 2024